/Engine/Plugins/Protocols/MQTT/Source/MQTTCore/Public/MQTTSubsystem.h
Provides persistent access to clients
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)(BlueprintType) class UMQTTSubsystem : public [UEngineSubsystem](API\Runtime\Engine\Subsystems\UEngineSubsystem)